Mixing-valve.



T. H. KENNEY.

MIXING VALVE. y APPLICATION FILED Nov. zo.IIsI3.

www@ .my 27, 1915.

fao: Y J J over, is provided with adjustable stops which vcontrol the full movement of the valve, the A THOMAS H. KENNEY, OF BOSTON, MASSACHUSETTS, ASSJEGNQUF. TO DALTON-INGERSULL MANUFCTURTNG- COMPANY, A C0 OTTON 0F MSSACHUSETTS.

BIG-VALVE.

Specification of Letters Patent.

Patented July 2*?, 19915..

Application :tiled November 20, 1913. Serial No. @02,062.

The present invention relates to a mixing valve ofl the kind which is utilized in connection with baths, showers, and the like, to control the mixture of hot and cold water in order to get the temperature desired at the outlet.

The invention is shown as embodied in a valve having hot and cold water inlets and two outlets, one of which supplies an overhead shower, and the other a spray pipe.

ln accordance with the invention the water is shut 0E by means of a compression cock having a washer which is forced against an annular seat by turning a screw threaded handle in the usual Way, the valve member being provided, however, with a water controlling member which aords a supplemental control of the How of water from the hot and cold water inlet pipes, the control being responsive to the' turning movement of the valve which unseats the main outlet.

The invention consists mainly in certain details of construction and arrangement whereby adjustments can be conditions, so that the valve, when installed, can be arranged to take care of the normal conditidn's which vary in diierent systems,

as to the differences of pressure of the hot and cold water, the usual maximum tempera-V ture of the hot water, &c. The valve, morestop' which is engaged when the valve is shut being adjusted so that'itl will 'be envwasher by a handle; while posite end controls the hot water inlet, and provides means for throttling said hot water finlet to someextent if the usual hot water Supply desirable to admit the water underfull volume.

made to suit the v 'washer 13 to engage seat. 'llhe mixing valve 10 and the compres-` #sion valve 12, are mounted on a common "stem 14, engaging gaged when the compression cock istight, "i thereby preventing the jamming of the valvefurther movement of the the adjustable stop at the opj -member 17 being made water tight by means is abnormallyA hot, so that it is'un.-

Figure 1 is a front elevation of a valve embodying the invention shown as adapted to be secured to the wall adjacent to a tub o r shower room. Fig. 2 is a horizontal section, on the line wz of Fig. 1. Fig. 3 is a pers ectlve view of the mixing member separate from'the other parts. Fig. 4 is a detail showing a face of the valve seat portion of the valve proper and indicating the means for retaining the mixing member in its proper adjustment; and Figs. 5, 6, and .7`are sectional views on the line ai of Fig. 2, showing the valve in diiit'erent positions.

In accordance with the invention, the hot and cold water pipes 1 and 2 are coupled to inlet passages 3. and 4 formed in the main part of the valve, the interior of which consists in a chamber 5 which constitutes the mixing chamberfor the water, .the said chamber having outlets 6 and 7 which may be separately controlled and which may lead respectively, to an' overhead shower spray and a hand spray. rll`he said chamber of course,.may be provided with a single outlet, or more than twoioutlets, leading to any point of consumption which may be desired.

The chamber .5, instead of being directly n communication with the two inlet passages, is provided with a supplemental chamber 8 which is cylindrical in form'and provided at its outer end with an annular valve seat 9, the inlet passages 3 and 4 leading directly to said chamber 8, and not being in ldirect communication with the main chamwhich is provided with a threadwl,V a female thread 16 ina coupling memberl?, which is adapted to be screwed into the :main casing, as clearly shown in he stem 14 .extends through the coupling of an ordinary packing' gland 18, the said stem being provided at the outside with. a knob or handle 19 by which the stein can be turned to open o r close the valve. By turning the handle, the stem 14 ismoved longi tudinally, thus withdrawing the valve. 12

from the. seat 9 and allowing the water vto iiow from the inlet passages through the supplemental chamber 8, into the chamberY l is such as to 't the supplemental chamber 8, there being, however, a pocket or recessz 20 formed in said mixing member and ex-l tending substantially half way around the same. It is obvious that the member 10,; when in such a position that the unrecessedE portion thereof liesnin front of either of the inlet passages 3 or 4 will close such inlet' passage, allowing the water to enter only from the passage which is in communication with the pocket 20.

ln the normal closed position of the valve, best shown in Figs. 2 and 6, the cavity 20 is in line with the cold water inlet passage 4,

andthe solid portion ofthe mixing member 10 is in a position to close the hot water inlet passage 3. The pocket 2O -is of such size, as shown in Fig. 6 that a considerable turning movement ofthe valve member can take place before the said' pocket is put out of communication with the cold water inlet. The construction is such thata quarter turn of the valve stem 14 will carry the compression valve l2 far enough away from its seat 9 to afford a free passage for the water into the chamber 5, and, at the same movement, while changing the position of the cavity 20, will still leave the said cavity in open communication with the cold water inlet. The valve stem 14 and its handle 19 are provided with an indicator member-21 which.v incidentally constitutes a stop member, as will be hereinafter described, the said indicating member traveling in the turning movement of the valve across the face of the'valve casing, which is shown as havin thereon the words cold, tepid, an hot The quarter movement of the valve stem 14 carries the indicator 21 to the part marked cold, and, in this position of the valve, the cold water passage opens freelyinto the chamber 5, so that cold water will be delivered therefrom through the passage 6 or the passage 7.

ln Fig. 5 the mixing member 10, is shown as in the position assumed when the valve stem 14 is. turned to the position where the indicator 21 covers the word tepid, and,

as indicated in Fig. 5, the pocket 20 in this case is in such a position as to receive Water from both the cold Water inlet 4 and the hot water inlet 3. In this position of the valve, therefore, the hot. and cold water mix, supplying the chamber 5 with Water of a moderatetempeature. Av further movement of the valve stem 14 to the position in which the indicator 21 is over the I word hot causes the mixing member 10 to close the cold water passage 4, as shown in Fig. 7 leaving only the pocket 20 in communication with the hot water inlet 3. To provide for a preliminary adjustment of the valve, the mixing member 10, which is provided with the pocket 20- is movable upon the valve stem 14, so that it` can be turned vwith rela- -tion thereto, thereby varying the position of the pocket 20 with relation to the inlet passages. Assuming, for example, that the normal temperature of the hot water in a given installment 'is relatively low, or assuming that the pressure of the cold water is high with relation to that of the hot, the mixing member 10 can be turned upon the valve stem 14, so that in the position marked tepid in Fig. 5 the relative areas of the cold and hot water inlet passages can be varied to bring about the desired result.

In the construction shown, the mixing member 10 is in the form of a sleeve fitting over the stem 14, the outer end of said sleeve being provided with an engaging device such as a pin 22 adapted to enter any one of a seriesI of openings 23 formed in the valve member 12 on the stem 14. After adjustment, the mixing member 10 is held in position by means of a set screw 24 and a nut 25 which is screwed on that end of the stem 14 which projects through the mixing member 10.

The valve embodying the@ invention is further provided with external adjustable stops 26 and 27 which are adapted to engage the indicator or stop member 21 at the ends of its movement. The stop 26 is adapted to be adjusted to take care of the com pression washer 13 on the valve member 12, the purpose of the said stop bein to prevent undue wear upon the washer w ich sometimes ensues when the valve is forced to its seat with unnecessary strength.

The adjustable stop 27 is for the purpose of limiting the movement of the valve when the water is .abnormally hot and needs tobe somewhat throttled.

`What I claim is:

1. A mixing valve having a cylindrical inlet chamber provided at opposite sides with hot and cold water inlets, and at the end with an outlet; a compression cock controlling said outlet, the stem of said cock projecting into said chamber; a cylindrical valve supported on said stem and fitting the inlet-chamber, said valve having a pockety of sufiicient capacity to bridge the hot and cold water inlets; and means for adjusting said valve with relation to said stem.

2. A mixing valve having a cylindrical inlet chamber provided at opposite sides with hot and cold water inlets, and at the end with an olitlet; a compression cock controlling said outlet, the stem of said cock projectin into said chamber; and the face of the va ve member thereof being provided Maaate la with an annular series of' holes; a cylin.

drical valve fitting the inlet chamber and being sleeved on said stem, said valve having a lateral pocket wider than the distance between the inlet ports; a projection at the end of said valve to engage in any of the holes in the face of the valve member of the compression cock; and a nut to hold said valve longitudinally on said stem.I

3. A mixing valve having a cylindrical inlet chamber provided at opposite sides with hot and` cold water inlets, and at the end with an outlet; a cylindrical valve tting said chamber and havin a lateral pocket. of suiicient capacity to ridge said inlets when the valve is turned on its axis; a rotatable actuating stem for. said valve; and means for adjusting said valve on said Stem.

d. A mixing valve having a cylindrical -inlet chamber provided vat opposite sides with hot and cold Water inlets, and at the end with an outlet; a cylindrical valve litting said/chamber and having a lateral pocket of sulicient capacity to bridge said inlets when the valve is turned. on its axis; a rotatable actuating stem for said valve; means for adjusting said valve on said stem; and an external indicator operated by said actuating stem.

lln testimony whereof, l have signed my name to this specification in the presence of two subscribing witnesses.

' v'irnos H. KENNEY.

Witnesses: i

JAS.. J.

M. n i 

